Definition
Reflection
The bouncing back of a wave when it hits a surface through which it cannot pass.
Refraction
The bending of a wave as it passes at an angle from one medium to another
Incident ray
Incoming ray
Reflected Ray
the light ray that bounces off a surface
Refracted Ray
The Ray that has bent as it enters a new medium
Normal line
imaginary line drawn perpendicular to the surface of a mirror or any surface
Angle
The amount of bending that a light ray experiences
Complete the sentences using the following keywords:
Reflection light reflected normal same incidence
When light hits a mirror, the angle at which it hits is the incidence as the angle at which it is reflected. Scientists called this the Law of Reflection. In correct science terms, the Reflection Law states that the angle of normal is equal to the angle of same when measured from the reflection.
Diagram
Research Task
What is a periscope?
How does it work?
Mirrors are placed at a 45° angle because light always reflects away from a mirror at the same angle that it hits it. There are usually two mirrors in a periscope.
 |
| Simple Periscope |
Draw and label a periscope?
